A war propaganda film with Hans Albers playing a double-role as a daring German flier and a Russian general – two cousins – who are bitterly hostile to each other after the end of the First World War.The pilot joins a Freikorps, which, in spite of the German capitulation, continues to fight on against Russia; the general commands the Russian troops opposite the flier’s unit.The general’s lover, a Russian spy, falls in love with the German pilot.In a duel between the two men, the Russian is killed and the German is badly wounded.When Russian soldiers bring back the wounded general to their headquarters, thinking him to be their general,the spy faces a conflict between love and patriotism.